| 101 | Pacific Energy Resources LTD | | Oil & Gas Operator | Sep 2009 |
| 102 | Pacific Enterprise Oil Co USA | Los Angeles, CA 90071-2005 | Oil & Gas Operator | Aug 2012 |
| 103 | Pacific Enterprises Oil Co. (USA) | Dallas, TX 75201 | Oil & Gas Operator | Feb 2001 |
| 104 | Pacific Enterprises Royalty Co | Oklahoma City, OK 73101 | Oil & Gas Operator | Feb 2002 |
| 105 | Pacific Exploration Oper Co, LLC | Houston, TX 77057 | Oil Operator | Sep 2025 |
| 106 | Pacific Gas And Electric Company | | Gas Operator | Jun 2025 |
| 107 | Pacific Inland Operating Corporation | | Gas Operator | Dec 1993 |
| 108 | Pacific Natural Gas Explor | | Oil & Gas Operator | Dec 1974 |
| 109 | Pacific Operators, Inc. | San Antonio, TX 78205 | Oil & Gas Operator | Mar 1999 |
| 110 | Pacific Palms Petroleum LLC | | Oil & Gas Operator | Jun 2025 |
| 111 | Pacific Petroleum Technology LLC | | Oil & Gas Operator | Dec 2018 |
| 112 | Pacific Trans Supply | Vernal, UT 84078 | Oil & Gas Operator | Jul 1987 |
| 113 | Pack-Man Energy Company | Ranger, TX 76470 | Oil & Gas Operator | Nov 2005 |
| 114 | Packard Energy LLC | Medicine Lodge, KS 67104 | Oil & Gas Operator | Apr 2025 |
| 115 | Packard Gas Company | Irving, TX 75063 | Oil & Gas Operator | Nov 2006 |
| 116 | Packard, Lynn | Medicine Lodge, KS | Oil & Gas Operator | Feb 2025 |
| 117 | Pactola Development Co | Tulsa, OK 74159 | Oil & Gas Operator | Sep 2004 |
| 118 | Pada Petroleum, Inc. | Maple City, KS 67102 | Oil & Gas Operator | Apr 2025 |
| 119 | Padco LLC | | Oil & Gas Operator | Mar 2025 |
| 120 | Padgett Oil Inc. | Sedan, KS 67361 | Oil Operator | May 2006 |
| 121 | Padon, Frank B. Oil Oper., Inc. | Houston, TX 77227 | Oil & Gas Operator | Nov 1998 |
| 122 | Padre Oil Co. | | Oil & Gas Operator | Jul 2025 |
| 123 | Page Development, L.L.C. | | Oil Operator | Dec 2024 |
| 124 | Page Energy | Eldorado, TX 76936 | Oil & Gas Operator | Mar 1997 |
| 125 | Page Exploration | Midland, TX 79701 | Oil & Gas Operator | Apr 2007 |
| 126 | Page Lew Barron | | Oil Operator | Dec 2024 |
| 127 | Page Oil & Gas, LLC | Midland, TX 79701 | Oil & Gas Operator | Sep 2025 |
| 128 | Page Operating, LLC | Midland, TX 79701 | Oil & Gas Operator | Aug 2010 |
| 129 | Page Petroleum Inc | Calgary, AB T2P3M-3000 | Oil & Gas Operator | Nov 1998 |
| 130 | Page, Allen | | Oil & Gas Operator | Dec 2014 |
| 131 | Paine Petroleum Company LLC | | Oil Operator | Dec 2013 |
| 132 | Paint Rock Operating, LLC | San Angelo, TX 76904 | Oil & Gas Operator | Sep 2025 |
| 133 | Painted Pegasus Petroleum LLC | | Oil & Gas Operator | Jul 2024 |
| 134 | Painter & McPhail | Bartlesville, OK 74006 | Oil Operator | Sep 1996 |
| 135 | Painter Oil And Gas LTD. | | Oil & Gas Operator | Jun 1986 |
| 136 | Painter Oil Comp | | Oil & Gas Operator | Jul 1993 |
| 137 | Pairadice Oil And Gas Company LLC | Caldwell, TX 77836 | Oil Operator | Sep 2025 |
| 138 | Paisano Minerals Company | Corpus Chrsti, TX 78477 | Oil & Gas Operator | Aug 2003 |
| 139 | Paisano Petroleum, Inc. | San Antonio, TX 78246 | Oil & Gas Operator | Dec 2016 |
| 140 | Paisano Production, Inc. | Somerset, TX 78069 | Oil Operator | Sep 2025 |
| 141 | Paiute Oil & Mining Corp | Salt Lake City, UT 84117 | Oil & Gas Operator | Jun 1989 |
| 142 | Pak Energy LLC | Calgary, AB T3A-5E8 | Oil Operator | Sep 2022 |
| 143 | Pal Energy LLC | Guymon, OK 73942-1950 | Gas Operator | Aug 2009 |
| 144 | Pal Kids Inc | Coronado, CA 92118 | Oil & Gas Operator | Nov 2000 |
| 145 | Palace Exploration Company | Houston, TX 77002 | Oil & Gas Operator | Mar 2007 |
| 146 | Palace Operating Company | Tulsa, OK 74136 | Oil & Gas Operator | Aug 2009 |
| 147 | Paladar Investments I, L.L.C. | Houston, TX 77090 | Oil & Gas Operator | Feb 2013 |
| 148 | Paladin Drilling Company | McLeod, TX 75565 | Gas Operator | Sep 2011 |
| 149 | Paladin Energy Corp. | Dallas, TX 75229 | Oil & Gas Operator | Jul 2017 |
| 150 | Paladin Energy Partners LLC | | Oil & Gas Operator | Dec 2006 |
| 151 | Paladin Exploration Co., Inc. | Plano, TX 75093 | Oil & Gas Operator | Feb 1995 |
| 152 | Paladin Petroleum III, L.L.C. | Austin, TX 78746 | Oil & Gas Operator | Sep 2025 |
| 153 | Paladin-Hayes, L.L.C. | Austin, TX 78746 | Oil & Gas Operator | Dec 1999 |
| 154 | Paleo Oil & Gas, Inc. | Graham, TX 76450 | Oil & Gas Operator | Sep 2025 |
| 155 | Paleo Oil Company LLC | Corpus Chrsti, TX 78411 | Oil & Gas Operator | Sep 2025 |
| 156 | Paleo, Inc. | Oklahoma City, OK 73112 | Oil & Gas Operator | Sep 2025 |
| 157 | Palisades Asset Holding Co LLC | Dallas, TX 75201 | Oil & Gas Operator | Aug 2017 |
| 158 | Palisades Operating Company | Midland, TX 79702 | Oil & Gas Operator | Sep 2025 |
| 159 | Palizay, Paul | Alden, NY 14004 | Gas Operator | Dec 2024 |
| 160 | Palm Energy Offshore, L.L.C. | | Oil & Gas Operator | Apr 2019 |
| 161 | Palm Oil & Gas Company | Sedona, AZ 86340 | Oil & Gas Operator | Jun 2025 |
| 162 | Palm Operating LLC | Oklahoma City, OK 73106-5646 | Oil & Gas Operator | Nov 2019 |
| 163 | Palmer Engineering, Inc. | Luray, KS 67649 | Gas Operator | Mar 2000 |
| 164 | Palmer Oil Properties | Post, TX 79356 | Oil & Gas Operator | Sep 2025 |
| 165 | Palmer Oil, Inc. | Garden City, KS 67846 | Oil & Gas Operator | Apr 2025 |
| 166 | Palmer Operating LLC | Megargel, TX 76370 | Oil Operator | Sep 2025 |
| 167 | Palmer Petroleum Inc. | Shreveport, LA 71105 | Oil & Gas Operator | Jun 2025 |
| 168 | Palmer Tank Trucks, Inc. | Olney, TX 76374 | Oil & Gas Operator | Mar 2008 |
| 169 | Palmer, J. M. | Keller, TX 76244 | Oil & Gas Operator | Aug 2009 |
| 170 | Palmer, James W. | Wichita Falls, TX 76308 | Oil & Gas Operator | Jul 2002 |
| 171 | Palmer, John Inc. | Megargel, TX 76370 | Oil & Gas Operator | Feb 1994 |
| 172 | Palmer, John LLC | Megargel, TX 76370 | Oil & Gas Operator | Sep 2025 |
| 173 | Palmer, Mike Oil | Megargel, TX 76370 | Oil & Gas Operator | Mar 2021 |
| 174 | Palmer, Scott Oil | Olney, TX 76374 | Oil Operator | Feb 2023 |
| 175 | Palmetto Oil Co., Inc. | | Oil & Gas Operator | Jan 2025 |
| 176 | Palmigo Oil Co. | West Hills, CA 91308 | Oil & Gas Operator | Oct 2017 |
| 177 | Palo Chop Development LLC | | Oil Operator | Aug 2018 |
| 178 | Palo Cross, LLC | Graham, TX 76450 | Oil & Gas Operator | Sep 2025 |
| 179 | Palo Duro Resources LLC | Perryton, TX 79070 | Oil & Gas Operator | Sep 2025 |
| 180 | Palo Petroleum, Inc. | Dallas, TX 75360 | Oil & Gas Operator | Sep 2025 |
| 181 | Palo Pinto Bond Company, LLC | Graham, TX 76450 | Oil & Gas Operator | Sep 2025 |
| 182 | Palo Pinto Gas Company | Snyder, TX 79550 | Oil & Gas Operator | Dec 1994 |
| 183 | Palo Pinto Oil & Gas Corporation | Mineral Wells, TX 76068 | Oil & Gas Operator | Apr 2015 |
| 184 | Palo Pinto Production, Inc. | Wichita Falls, TX 76301 | Oil & Gas Operator | Aug 1998 |
| 185 | Paloma Blanca Well Service Inc. | Roswell, NM 88202 | Oil & Gas Operator | Jun 2002 |
| 186 | Paloma Natural Gas, LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2024 |
| 187 | Paloma Operating Co Inc | Houston, TX 77002-5220 | Oil & Gas Operator | May 2025 |
| 188 | Paloma Operating, LLC | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Sep 2025 |
| 189 | Paloma Permian Assetco, LLC | Houston, TX 77002 | Oil & Gas Operator | Jun 2025 |
| 190 | Paloma Resources Inc | Roswell, NM 88201 | Oil & Gas Operator | Dec 1998 |
| 191 | Paloma Resources, LLC | Houston, TX 77002 | Oil & Gas Operator | Jun 2018 |
| 192 | Palomino Petrole | | Oil & Gas Operator | Dec 1995 |
| 193 | Palomino Petroleum | Newton, KS 67114 | Oil Operator | Oct 2003 |
| 194 | Palomino Petroleum Inc | Newton, KS 67114 | Oil & Gas Operator | Apr 2025 |
| 195 | Palrich Oil Corporation | Abilene, TX 79601 | Oil & Gas Operator | Apr 2004 |
| 196 | Paluca Petroleum Inc | Holdenville, OK 74848 | Oil & Gas Operator | May 2025 |
| 197 | Paluxy Oil & Gas, LLC | Forney, TX 75126 | Oil & Gas Operator | Sep 2025 |
| 198 | Paluxy Sands Corporation | Sonora, TX 76950 | Oil & Gas Operator | Jun 2012 |
| 199 | Pam-Ark Oil Producers | | Oil Operator | Dec 1985 |
| 200 | Pampa Water Disposal, Inc. | Booker, TX 79005 | Oil & Gas Operator | Sep 2025 |